• An evaluation of 56 patients with X-linked retinitis pigmentosa revealed a profile of findings that include the following: night blindness within the first two decades of life; spherical refractive errors of −2.00 diopters or greater in addition to an increased prevalence of a cylindrical correction of ± diopters or greater; appreciable impairment of central visual acuity to 20/200 or less by the fifth decade of life; characteristic patterns of field loss; presence of a foveal lesion in up to 75% of the study group; posterior subcapsular lens opacities; and nondetectable electroretinographic amplitudes in more than two thirds of the patients (using conventional full-field recording procedures). These observations are of general value in diagnosis of this disease and for counseling of patients afflicted with this severe form of hereditary night blindness.
Fishman GA, Farber MD, Derlacki DJ. X-linked Retinitis Pigmentosa Profile of Clinical Findings. Arch Ophthalmol. 1988;106(3):369-375. doi:10.1001/archopht.1988.01060130395029